Safety device for overhead electric conductors.



PATENTED FEB. 19, 1967.

' B. GIRAUD.

SAFETY DEVICE FOR OVERHEAD ELECTRIC UONDUUTORS.

APPLICATION FILED MAR. 6, 1906.

3 SHEETS-SHEET 1.

17 72 z ie QZFM g THE NORRIS PETER; ca, WASHINGTON. n. c,

No. 845,034. PATENTED FEB. 19, 1907.

' E. GIRAUD.

SAFETY DEVICE FOR OVERHEAD ELECTRIC OONDUGTORS.

APPLICATION FILED MAR. 6, 1906.

3 SHEETS-SHEET 2.

- .ijizzzze Giraud I THE NORRIS PETERS pa, WASHINGTON, u. c

No. 845,034. PATENTED FEB. 19, 1907. E. GIRAUD.

SAFETY DEVICE FOR OVERHEAD ELECTRIC CONDUCTORS.

APPLICATION FILED MAR 6, 1906.

- 3 SHEETS-SHEET 3.

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2 7716 76 Qdrctacd w (Kg THE NORRIS PETERS c0., WASHINGTON, n. c.

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%TATE% F d IEE'I OFFIOE.

EMILE GIRAUD, OF PARIS, FRANCE.

Specification of Letters Patent.

Patented Feb. 19, 1907.

Original application filed April 10, 1905, Serial No. 254,836. Dividedand this application filed March 6, 1906. Qerial No. 304.535.

T0 60 whom it may concern:

Be it known that I, EMILE GlRAUD, engineer, a citizen of the FrenchRepublic, residing at Paris, France, have invented certain new anduseful Improvements in Safety Devices for Overhead Electric Conductors,of which the following is a specification.

'lhis invention relates to safety devices for electric conductors; andthe object thereof is to provide a safety device in a manner ashereinafter set forth to prevent differences of strain from one end tothe other of the conductor and, furthermore, to prevent sparkmg.

In the drawings forming a part of this specification, wherein likereference characters denote corresponding parts throughout the severalviews, Figures 1 and 2 are elevations at right angles to each other of asafety device in accordance with this. invention. Fig. 3 is a detail.Fig. 4 is a top plan. Fig. 5 is a diagrammatic view when the conductoris not broken, and Fig. 6 is a view similar to Fig. 5 with the conductorbroken.

Referring to the drawings by reference characters, a denotes a metallicmember fixed to an insulator I) through the medium of the clamps c c andcollar d. The metallic member a can be adjusted to various inclinationsin the groove of the insulator and is formed with a circular portion,with the ends thereof in the form of polygonal prisms e a. Each of theclamps c c is formed with an opening :r of a shape corresponding to thesection of the prisms e e. Owing to the manner of constructing the endsof the circular portion of the member a, the same can be inclined in asmany directions as there are sides of the prisms. To the member a is connected at g a lever f, which carries a hanger formed of two members(indicated by the reference character h) and closely engaging theconductort'. 'I he hanger is pivoted on an axis 3', fixed to one end ofthe leverf, in order to prevent twisting of the conductor t'when thelever f moves on its pivot g.

To the lever f are secured the projections 7c 7c, and to these latterprojections are attached, respectively, the arms m m, the former ofwhich terminates in or carries a tube a, while the latter terminates inor carries a tube a. Each of the tubes is V-shaped or bent in the formof an are. On the lever f is also fixed a bent arm 0, the end of whichconstitutes a fork for supporting the conductor t.

Normally the conductor t is retained in a fixed position by the safetydevice, and it cannot move to the side B, owing to the fact that suchdisplacement is prevented by the arm 0, which bears on the conductor onthe side A. The conductor cannot move to the side A, as the tubes n awould bear on the conductor.

Zihe source of electricity is indicated by the reference character 9.

If the conductor breaks onthe side A, that portion on the side B willslack, consequently drawing the lever f toward B, owing to the fact thatthe conductor is not maintained any more by the arm 0. The lever pivotson the axis 9 until the tube a bears against that conductor which passesover it. If short-circuiting must be obtained with a conductor mountedbeneath the conductor 'L, the tube a will enter into action instead ofthe tube a.

What I claim is-- A safety device for electrical conductors comprising alever pivoted to the insulator of the conductor, a hanger carried by anaxis fixed to one end of the lever and closely engaging the conductor, abent arm carried by said lever and having a fork-shaped free end whichbears against the conductor, and tWo arms fixed to the lever andextendingin parallelism to the conductor, one of the arms arranged abovethe other and said arms extending in opposite directions with respect toeach other.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

EMILE GIRAUD.

Witnesses EMILE KLoTE, PAUL BLUM.

